Breast pump



FIG. 1 is a front perspective view of a first embodiment showing our new design with an attachment clip;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front perspective view of a second embodiment showing our new design without an attachment clip;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a front elevation view thereof;

FIG. 11 is a right side elevation view thereof;

FIG. 12 is a left side elevation view thereof;

FIG. 13 is a top plan view thereof; and,

FIG. 14 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the breast pump that form no part of the claimed design. 

CLAIM The ornamental design for a breast pump, as shown and described. 